National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Aurora Municipal Airport (KARR)

Lat: 41.77°NLon: 88.48°WElev: 696ft.

Mostly Cloudy

74°F

23°C

Humidity 97%
Wind Speed Calm
Barometer 29.94 in (1013.2 mb)
Dewpoint 73°F (23°C)
Visibility 7.00 mi
Last update 3 Sep 12:52 am CDT
Extended Forecast for

Somonauk IL

Heat Advisory September 3, 01:09am until September 3, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 3, 01:09am until September 3, 09:00pm

    NOW until 9:00pm Thu

    Heat Advisory

  • Overnight

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Heat index values as high as 100. West southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. Southeast wind around 5 mph.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 90. Heat index values as high as 99. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 71. Calm wind becoming east southeast around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. South southwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Heat index values as high as 100. West southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. Southeast wind around 5 mph.
Friday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 90. Heat index values as high as 99. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 20%.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 71. Calm wind becoming east southeast around 5 mph after midnight. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 66.
Labor Day
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Partly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Somonauk IL
 41.63°N 88.69°W
Last Update:
9:31 pm CDT Sep 2, 2026
Forecast Valid:
1am CDT Sep 3, 2026-6pm CDT Sep 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation